Measurement of the top quark mass in the tt¯→ lepton+jets channel from s=8 TeV ATLAS data and combination with previous results

Aaboud M.; Aad G.; Abbott B.; Abdinov O.; Abeloos B.; Abhayasinghe D. K.; Abidi S. H.; AbouZeid O. S.; Abraham N. L.; Abramowicz H.; Abreu H.; Abulaiti Y.; Acharya B. S.; Adachi S.; Adam L.; Adamczyk L.; Adelman J.; Adersberger M.; Adiguzel A.; Adye T.; Affolder A. A.; Afik Y.; Agheorghiesei C.; Aguilar-Saavedra J. A.; Ahmadov F.; Aielli G.; Akatsuka S.; Åkesson T. P. A.; Akilli E.; Akimov A. V.; Alberghi G. L.; Albert J.; Albicocco P.; Alconada ; Verzini M. J.; Alderweireldt S.; Aleksa M.; Aleksandrov I. N.; Alexa C.; Alexopoulos T.; Alhroob M.; Ali B.; Alimonti G.; Alison J.; Alkire S. P.; Allaire C.; Allbrooke B. M. M.; Allen B. W.; Allport P. P.; Aloisio A.; Alonso A.; Alonso F.; Alpigiani C.; Alshehri A. A.; Alstaty M. I.; Alvarez ; Gonzalez B. , Álvarez ; Piqueras D.; Alviggi M. G.; Amadio B. T.; Amaral ; Coutinho Y.; Ambler A.; Ambroz L.; Amelung C.; Amidei D.; Amor Dos Santos S. P.; Amoroso S.; Amrouche C. S.; An F.; Anastopoulos C.; Ancu L. S.; Andari N.; Andeen T.; Anders C. F.; Anders J. K.; Anderson K. J.; Andreazza A.; Andrei V.; Anelli C. R.; Angelidakis S.; Angelozzi I.; Angerami A.; Anisenkov A. V.; Annovi A.; Antel C.; Anthony M. T.; Antonelli M.; Antrim D. J. A.; Anulli F.; Aoki M.; Aparisi Pozo J. A.; Aperio ; Bella L.; Arabidze G.; Araque J. P.; Araujo ; Ferraz V. , Araujo ; Pereira R.; Arce A. T. H.; Ardell R. E.; Arduh F. A.; Arguin J. -F.; Argyropoulos S.; Armbruster A. J.; Armitage L. J.; Armstrong A.; Arnaez O.; Arnold H.; Arratia M.; Arslan O.; Artamonov A.; Artoni G.; Artz S.; Asai S.; Asbah N.; Asimakopoulou E. M.; Asquith L.; Assamagan K.; Astalos R.; Atkin R. J.; Atkinson M.; Atlay N. B.; Augsten K.; Avolio G.; Avramidou R.; Ayoub M. K.; Azoulay A. M.; Azuelos G.; Baas A. E.; Baca M. J.; Bachacou H.; Bachas K.; Backes M.; Bagnaia P.; Bahmani M.; Bahrasemani H.; Bailey A. J.; Baines J. T.; Bajic M.; Bakalis C.; Baker O. K.; Bakker P. J.; Bakshi ; Gupta D.; Balaji S.; Baldin E. M.; Balek P.; Balli F.; Balunas W. K.; Balz J.; Banas E.; Bandyopadhyay A.; Banerjee S.; Bannoura A. A. E.; Barak L.; Barbe W. M.; Barberio E. L.; Barberis D.; Barbero M.; Barillari T.; Barisits M. -S.; Barkeloo J.; Barklow T.; Barnea R.; Barnes S. L.; Barnett B. M.; Barnett R. M.; Barnovska-Blenessy Z.; Baroncelli A.; Barone G.; Barr A. J.; Barranco ; Navarro L.; Barreiro F.; Barreiro  Guimarães ; da ; Costa J.; Bartoldus R.; Barton A. E.; Bartos P.; Basalaev A.; Bassalat A.; Bates R. L.; Batista S. J.; Batlamous S.; Batley J. R.; Battaglia M.; Bauce M.; Bauer F.; Bauer K. T.; Bawa H. S.; Beacham J. B.; Beau T.; Beauchemin P. H.; Bechtle P.; Beck H. C.; Beck H. P.; Becker K.; Becker M.;

doi: 10.17863/cam.54307

handle: 2434/671308 , 20.500.11770/304301 , 11572/318665 , 11390/1148571 , 11567/968550 , 11568/1030484 , 11585/705329 , 11571/1287167

Measurement of the top quark mass in the tt¯→ lepton+jets channel from s=8 TeV ATLAS data and combination with previous results

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Abstract

The top quark mass is measured using a template method in the $t\bar{t}\to$ lepton+jets channel (lepton is $e$ or $\mu$) using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of $\sqrt{s}=8$ TeV and correspond to an integrated luminosity of 20.2 fb$^{-1}$. The $t\bar{t}\to$ lepton+jets channel is characterized by the presence of a charged lepton, a neutrino and four jets, two of which originate from bottom quarks ($b$). Exploiting a three-dimensional template technique, the top quark mass is determined together with a global jet energy scale factor and a relative $b$-to-light-jet energy scale factor. The mass of the top quark is measured to be $m_{top}= 172.08 \pm 0.39 (stat) \pm 0.82 (syst)$ GeV. A combination with previous ATLAS $m_{top}$ measurements gives $m_{top}= 172.69 \pm 0.25 (stat) \pm 0.41 (syst)$ GeV.

Related Organizations

University of Cambridge
United Kingdom
Autonomous University of Barcelona
Spain
University of Pavia
Italy
Alma Mater Studiorum University of Bologna
Italy
University of Trento
Italy

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Keywords

500, Hadron-hadron collisions ; top quark, LHC, 5106 Nuclear and Plasma Physics, Engineering (miscellaneous); Physics and Astronomy (miscellaneous), 530, 51 Physical Sciences, 5107 Particle and High Energy Physics

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